<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="./css/inputnumber.css" />
    <link rel="stylesheet" href="./css/index.css" />
    <title>购物车</title>
</head>

<body>
    <div class="app-container" id="app">
        <!-- 顶部banner -->
        <div class="banner-box"><img src="./img/fruit.jpg" alt="" /></div>
        <!-- 面包屑 -->
        <div class="breadcrumb">
            <span>🏠</span> /
            <span>购物车</span>
        </div>
        <!-- 购物车主体 -->
        <div v-if="fruitList.length" class="main">
            <div class="table">
                <!-- 头部 -->
                <div class="thead">
                    <div class="tr">
                        <div class="th">选中</div>
                        <div class="th th-pic">图片</div>
                        <div class="th">单价</div>
                        <div class="th num-th">个数</div>
                        <div class="th">小计</div>
                        <div class="th">操作</div>
                    </div>
                </div>
                <!-- 身体 -->
                <div class="tbody">
                    <!-- 渲染 -->
                    <div class="tr" :class="{active: item.isChecked}" v-for="(item,index) in fruitList" :key="item.id">
                        <!-- 选中 -->
                        <div class="td"><input type="checkbox" v-model="item.isChecked" checked /></div>
                        <!-- 图片 -->
                        <div class="td"><img :src="item.icon" alt="" /></div>
                        <!-- 价格 -->
                        <div class="td">{{ item.price }}</div>
                        <!-- 个数 -->
                        <div class="td">
                            <div class="my-input-number">
                                <button class="decrease" @click="item.num--" :disabled="item.num <=1"> - </button>
                                <span class="my-input__inner">{{ item.num }}</span>
                                <button class="increase" @click="item.num++"> + </button>
                            </div>
                        </div>
                        <div class="td">{{ item.price }}</div>
                        <!-- 删除 -->
                        <div class="td" @click="del(item.id)"><button>删除</button></div>
                    </div>


                </div>
            </div>
            <!-- 底部 -->
            <div class="bottom">
                <!-- 全选 -->
                <label class="check-all">
            <input v-model="all" type="checkbox" />
            全选
          </label>
                <div class="right-box">
                    <!-- 所有商品总价 -->
                    <span class="price-box">总价&nbsp;&nbsp;:&nbsp;&nbsp;¥&nbsp;<span class="price">
                        {{ total }}
                    </span></span>
                    <!-- 结算按钮 -->
                    <button class="pay">结算( {{allCount}} )</button>
                </div>
            </div>
        </div>
        <!-- 空车 -->
        <div v-else class="empty">🛒空空如也</div>
    </div>
    <script src="../../vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                // 水果列表-数据
                fruitList: [{
                    id: 1,
                    icon: './img/火龙果.png',
                    isChecked: true,
                    num: 2,
                    price: 6,
                }, {
                    id: 2,
                    icon: './img/荔枝.png',
                    isChecked: false,
                    num: 7,
                    price: 20,
                }, {
                    id: 3,
                    icon: './img/榴莲.png',
                    isChecked: false,
                    num: 3,
                    price: 40,
                }, {
                    id: 4,
                    icon: './img/鸭梨.png',
                    isChecked: true,
                    num: 10,
                    price: 3,
                }, {
                    id: 5,
                    icon: './img/樱桃.png',
                    isChecked: false,
                    num: 20,
                    price: 34,
                }, ],
                // 选中
                // isAllCheck: true

            },
            methods: {
                // 删除
                del(id) {
                    this.fruitList = this.fruitList.filter(item => item.id !== id)
                },

            },
            computed: {
                // 总价
                total() {
                    return this.fruitList.filter(item => item.isChecked).reduce((sum, item) => {
                        return sum + item.num * item.price
                    }, 0)
                },
                // 结算
                allCount() {
                    return this.fruitList.filter(item => item.isChecked).length
                },
                // 全选
                all: {
                    get() {
                        return this.fruitList.every(v => v.isChecked)
                    },
                    set(value) {
                        this.fruitList.forEach(item => {
                            item.isChecked = value
                        });
                    }
                }

            },

        })
    </script>
</body>

</html>